How to style GWT Editor errors

I am using the GWT 2.4 Editor framework. I have everything working with errors displaying, b开发者_如何学编程ut I am not sure how to style the errors! It looks like the styles are part of a CssResource as they are obfuscated. Anyone know how to go about styling these?

The errors I am wanting to style are the ones automatically added by the ValueBoxEditorDecorator#showErrors.

ValueBoxEditorDecorator is actually a bit "half-baked". You'd better copy/paste it to make your own.